207820990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{122971}}^1$

素因数の和:123004

約数の個数: 24

約数和(自身を含む): 405069768

約数和(自身を除く): 197248778

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 122971, 245942, 614855, 1229710, 1598623, 3197246, 7993115, 15986230, 20782099, 41564198, 103910495, 207820990]

約数ペア:

[(1, 207820990), (2, 103910495), (5, 41564198), (10, 20782099), (13, 15986230), (26, 7993115), (65, 3197246), (130, 1598623), (169, 1229710), (338, 614855), (845, 245942), (1690, 122971)]